<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<style>
  #box {
    color: orange;
  }
  .box {
    color: blue;
  }
  div {
    color: green;
  }
  body {
    color: red;
  }
</style>
<body>

<div class="box" id="box" style="color: #888888">测试优先级</div>


</body>
</html>
